[antlr-interest] adding "version" option to ANTLR grammars

[Gary R. Van Sickle]

> From:  Terence Parr
> 
> That is an interesting idea. I am cc'ing the  interest list. 
> sorry for the long delay.
> 
> I take it that you are suggesting the following
> 
> grammar T;
> options {
> 	language = ...;
> 	version = "3.1.1";
> }
> 

FWIW, when I become King Of The World, all languages will require such an
indication of what version they were written for.

-- 
Gary R. Van Sickle